﻿#region File and License Information
/*
<File>
	<License Type="BSD">
		Copyright © 2009 - 2012, Outcoder. All rights reserved.
	
		This file is part of Calcium (http://calciumsdk.net).

		Redistribution and use in source and binary forms, with or without
		modification, are permitted provided that the following conditions are met:
			* Redistributions of source code must retain the above copyright
			  notice, this list of conditions and the following disclaimer.
			* Redistributions in binary form must reproduce the above copyright
			  notice, this list of conditions and the following disclaimer in the
			  documentation and/or other materials provided with the distribution.
			* Neither the name of the <organization> nor the
			  names of its contributors may be used to endorse or promote products
			  derived from this software without specific prior written permission.

		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
		ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
		WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
		DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
		DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
		(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
		LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
		ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
		SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	</License>
	<Owner Name="Daniel Vaughan" Email="danielvaughan@outcoder.com" />
	<CreationDate>2010-03-03 00:59:46Z</CreationDate>
</File>
*/
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;
using Outcoder.UI.Xaml;

namespace Outcoder.Calcium.Gui
{
	public partial class ShellView
	{
		double marginExpanded;
		double marginContracted = 10;

		void InitializeDimensionDefaults()
		{
			marginExpanded = columnDefinition_Left.MinWidth;
		}

		/* Needs refactoring. */
		#region Region Expansion

		GridLength columnRightWidth = new GridLength(1, GridUnitType.Star);

		GridLength rowBannerHeight = GridLength.Auto;
		GridLength columnLeftWidth = GridLength.Auto;
		GridLength rowStatusHeight = GridLength.Auto;

		void Expander_Banner_ExpandChanged(object sender, RoutedEventArgs e)
		{
			//			AnimateRow(sender, e, rowDefinition_Banner, ref rowBannerHeight, null);
		}

		void Expander_Left_ExpandChanged(object sender, RoutedEventArgs e)
		{
			ColumnExpandChanged(sender, e, columnDefinition_Left, ref columnLeftWidth, gridSplitter_Left);
		}

		void Expander_Right_ExpandChanged(object sender, RoutedEventArgs e)
		{
			ColumnExpandChanged(sender, e, columnDefinition_Right, ref columnRightWidth, gridSplitter_Right);
		}

		/// <summary>Disable the Slider and reset the Height of the status row</summary>
		/// <param name="sender">The expander</param>
		/// <param name="e">The expand or collapsed event</param>
		void Expander_Bottom_ExpandChanged(object sender, RoutedEventArgs e)
		{
			AnimateRow(sender, e, rowDefinition_OutputDisplay, ref rowStatusHeight, gridSplitter_Bottom);
		}

		void ColumnExpandChanged(object sender, RoutedEventArgs e, ColumnDefinition columnDefinition,
			ref GridLength gridLength, GridSplitter gridSplitter)
		{
			if (e.OriginalSource != sender || gridSplitter == null || columnDefinition == null)
			{
				return;
			}

			if (e.RoutedEvent == Expander.CollapsedEvent)
			{
				ContractColumn(columnDefinition, ref gridLength, gridSplitter);
			}
			else
			{
				ExpandColumn(columnDefinition, ref gridLength, gridSplitter);
			}
		}

		void AnimateRow(object sender, RoutedEventArgs e, RowDefinition rowDefinition,
			ref GridLength gridLength, GridSplitter gridSplitter)
		{
			if (e.OriginalSource != sender || rowDefinition == null)
			{
				return;
			}

			if (e.RoutedEvent == Expander.CollapsedEvent)
			{
				ContractRow(rowDefinition, ref gridLength, gridSplitter);
			}
			else
			{
				ExpandRow(rowDefinition, ref gridLength, gridSplitter);
			}
		}

		void ExpandColumn(ColumnDefinition columnDefinition, ref GridLength gridLength, GridSplitter gridSplitter)
		{
			columnDefinition.MinWidth = marginExpanded;

			var animation = new GridLengthAnimation
			{
				From = columnDefinition.Width,
				To = gridLength,
				Duration = new Duration(TimeSpan.FromSeconds(.25)),
				FillBehavior = FillBehavior.Stop
			};
			animation.Completed += ((sender, e) =>
			{
				if (gridSplitter != null)
				{
					gridSplitter.IsEnabled = true;
				}
			});
			columnDefinition.BeginAnimation(ColumnDefinition.WidthProperty, animation);
		}

		void ContractColumn(ColumnDefinition columnDefinition, ref GridLength gridLength, GridSplitter gridSplitter)
		{
			columnDefinition.MinWidth = marginContracted;

			if (gridSplitter != null)
			{
				gridSplitter.IsEnabled = false;
			}
			//border_Left.Margin = new Thickness(0,0,20,0);
			//gridSplitter_Left.Visibility = System.Windows.Visibility.Collapsed;
			gridLength = columnDefinition.Width;
			var animation = new GridLengthAnimation
			{
				To = new GridLength(0),
				Duration = new Duration(TimeSpan.FromSeconds(.25))
			};
			columnDefinition.BeginAnimation(ColumnDefinition.WidthProperty, animation);
		}

		void ExpandRow(RowDefinition rowDefinition, ref GridLength gridLength, GridSplitter gridSplitter)
		{
			rowDefinition.MinHeight = marginExpanded;

			var animation = new GridLengthAnimation
			{
				From = rowDefinition.Height,
				To = gridLength,
				Duration = new Duration(TimeSpan.FromSeconds(.25)),
				FillBehavior = FillBehavior.Stop
			};

			animation.Completed += ((sender, e) =>
			{
				if (gridSplitter != null)
				{
					gridSplitter.IsEnabled = true;
				}
			});
			rowDefinition.BeginAnimation(RowDefinition.HeightProperty, animation);
		}

		void ContractRow(RowDefinition rowDefinition, ref GridLength gridLength, GridSplitter gridSplitter)
		{
			rowDefinition.MinHeight = marginContracted;

			if (gridSplitter != null)
			{
				gridSplitter.IsEnabled = false;
			}

			gridLength = rowDefinition.Height;
			var animation = new GridLengthAnimation
			{
				To = new GridLength(0),
				Duration = new Duration(TimeSpan.FromSeconds(.25))
			};
			rowDefinition.BeginAnimation(RowDefinition.HeightProperty, animation);
		}

		#endregion

		#region Hide and show regions based on whether they are populated
		void UpdateAllRegionDimensions()
		{
			UpdateRegionVisibility(tabControl_Right, gridSplitter_Right, columnDefinition_Right, border_Right);
			UpdateRegionVisibility(tabControl_Left, gridSplitter_Left, columnDefinition_Left, border_Left);
			UpdateRegionVisibility(tabControl_Bottom, gridSplitter_Bottom, rowDefinition_OutputDisplay, border_Bottom);
		}

		void OnTabControl_Right_SelectionChanged(object sender, SelectionChangedEventArgs e)
		{
			UpdateRegionVisibility(tabControl_Right, gridSplitter_Right, columnDefinition_Right, border_Right);
			var content = tabControl_Right.SelectedContent as UIElement;
			if (content != null)
			{
				content.Focus();
			}
		}

		void OnTabControl_Left_SelectionChanged(object sender, SelectionChangedEventArgs e)
		{
			UpdateRegionVisibility(tabControl_Left, gridSplitter_Left, columnDefinition_Left, border_Left);
			var content = tabControl_Left.SelectedContent as UIElement;
			if (content != null)
			{
				content.Focus();
			}
		}

		void OnTabControl_Bottom_SelectionChanged(object sender, SelectionChangedEventArgs e)
		{
			UpdateRegionVisibility(tabControl_Bottom, gridSplitter_Bottom, rowDefinition_OutputDisplay, border_Bottom);
			var content = tabControl_Bottom.SelectedContent as UIElement;
			if (content != null)
			{
				content.Focus();
			}
		}

		void UpdateRegionVisibility(TabControl tabControl, GridSplitter gridSplitter,
			RowDefinition rowDefinition, Border border)
		{
			var itemCount = tabControl.Items.Count;
			if (itemCount < 1)
			{
				rowDefinition.MaxHeight = 0;
				rowDefinition.MinHeight = marginContracted;
				gridSplitter.Visibility = Visibility.Collapsed;
				border.Visibility = Visibility.Collapsed;
			}
			else if (itemCount == 1)
			{
				rowDefinition.MaxHeight = double.MaxValue;
				rowDefinition.MinHeight = marginExpanded;
				gridSplitter.Visibility = Visibility.Visible;
				border.Visibility = Visibility.Visible;
			}
		}

		void UpdateRegionVisibility(TabControl tabControl, GridSplitter gridSplitter,
			ColumnDefinition columnDefinition, Border border)
		{
			var itemCount = tabControl.Items.Count;
			if (itemCount < 1)
			{
				columnDefinition.MaxWidth = 0;
				columnDefinition.MinWidth = marginContracted;
				gridSplitter.Visibility = Visibility.Collapsed;
				border.Visibility = Visibility.Collapsed;
			}
			else if (itemCount == 1)
			{
				columnDefinition.MaxWidth = double.MaxValue;
				columnDefinition.MinWidth = marginExpanded;
				gridSplitter.Visibility = Visibility.Visible;
				border.Visibility = Visibility.Visible;
			}
		}
		#endregion
	}
}
